I attempted to install the insync client on a machine with Snow Leopard. It appeared to install successfully and I copied it to the applications folder but when I tried to do the first-time setup, I got a big blank rectangle over the browser after authorizing the application. This happened in both Chrome and Safari and persisted after a system restart. I do get redirected to the page that says I am signed in, but when I try to access the client icon in the system tray, nothing comes up but a blank box. I’ve successfully installed the client on two other machines running Windows 10 and Ubuntu 14.04 respectively, so I know basically how this is supposed to go.